Fuse



Sept. 12, 1933. E. P. KLOPFENSTEIN 1,926,445

FUSE

Filed Jan. 27, 1952 I N V EN TOR. EMMET T P. /1L OPFENS TE/N ATTORNEYS.

Patented Sept. 12, 1933 UNITED STATES PATENT OFFICE FUSE Emmett P. Klopfenstein, Los Angeles, Calif.

Application January 27, 1932. Serial No. 589,258

2 Claims. (01. 200-430) My invention relates to non-reusable electrical of mica and permanently sealed at their edges fuses of the class designed ordinarily for use in by a metallic or other suitable well known bindconjunction with enclosed switches and adapted ing 8 whose walls 9 are upset against the opposite to be arranged in an electrical circuit to bridge faces of the respective disks 6 and '7 over such the load carrying conductors normally and to area thereof as is necessary to give proper 60 automatically open the circuit upon an overstrength and rigidity to the structure and to seloading thereof. Generally, fuses of this class curely seal a fusible element 10 between the said include circuit-completing contact members disks. which form parts of a composite structure or plug The fusible element consists of a link portion 10 assembly wherein a fusible element is structurally 11 which is fiatwise interposed between the aforeconstituted to effect a blowing of the fuse upon mentioned disks 6 and 7 so as to be visible from an overloading of the circuit. the front of the device when the latter is oper- Such fuse plugs, while not excessively expenatively connected in an electrical circuit. The sive, are rendered totally unfit for further use said link is formed with a medial destructible Wh b ow a d it is an Object of my invention portion 12 which may be of any suitable well to provide eXtTeInelY p Y p sit v y acting known material that will normally adapt itself to means, capable of adapting itself to one section of such current voltage as 11; is intended t par- Separable or -P electrical connector ticular fuse shall stand, but will be instantly Whose p section is adapted to be eooommodestroyed when the circuit is overloaded, thereby 20 dated in a receiving socket and to receive the to totally destroy the bridge between the termimetallic Drong-hke Contact members of the other nal conductors of the circuit. The said link is section of the connector, the same being usually provided with a pair of legs prongs 13 13 attached to one end of an electrical cordwhich are approximately in parallelism normally My invention essentially consists of fusible and of Such length th t they may b operatively 25 means having Circuit completing prongs which projected into the receiving socket portions of will adapt themselves to a p us s c of the the plug section 14 of a two-part connector of type herein referred to and which, in view thereany construction connectors employing a of, will lessen the cost of such devices and enable tion Such as 14 herein referred t have a flat guy. the Section to b repeatedly pp With a new face 15 at the point of entry of the prongs to 30 fusible element Whenever the necessity erises- A their receiving sockets, the latter indicated heredevice such as I have designed is positively actin at ,The prongs are also proportioned 111g, simple of Construction and may be manufeeso that the inner fiat face of the disk-like entured and sold at but a small fraction of the cost velope employed 111 fit snugly thereagainst when of non-reusable plugs heretofore employed. the device is fully applied h id prongs 35 To the ends herein advanced and Others that l3l3 pass through slits 16 formed in the inner W manifest themselves as thedesoliption D disk 7. The device is in the nature of an adapter ceeds, the invention consists in certain improvefor converting a connector section of the type ments and combinations and arrangements of referred t i t fuse. pa ts as will b h r inaft ful s t forth, with It follows that from what has been said in the 40 the features of novelty pointed out in the hereto foregoing that the connector section when assopp eleimsciated with the device may be connected in the In the accompanying drawing: circuit of an enclosed switch box in a manner Figure 1 is a p sp view of the device common to the application to such boxes of gensepemted from the form of conneetor section of eral forms of non-reusable fuses. When the fuse the type which I employ in combination with the element is destroyed by an overloading of the device; circuit this fact will be made visible by observing Figure 2 is a perspective V of the us le the condition of the medial portion of the link element and its (Bo-operable Contact members; or bridge piece. Upon destruction oi the link and piece the device can be easily lifted or with- Figure 3 is a Section cut through h device o drawn from its coacting connector section and 05 a line with the contact members. thrown away and a new one substituted therefor.

In carrying the invention into practice, use is It is not necessary, because of the characterizing made of what I shall hereinafter refer to as a features of my invention, to remove the connector transparent envelope 5, thesame consisting prefsection from its socket in the switch box with erably of two strips or disks 6 and 7 constructed which it is employed.

I claim:

1. A device of the class described comprising a ill-shaped metallic structure formed between its ends with a fusible portion and provided at its ends with spaced apart circuit completin legs adapted for insertion in the respective sockets of the plug, mica disks between which the fusible portion is interposed and from one of which said disks said legs are exposed, and a metallic rein forcement extending about the marginal edges or the disks.

2. The combination with a plug having a flat face at one end, the plug having contact receiving sockets opening at one end onto said fiat face,

ma am EMMETT P. KLOPFENSTEIN. 

